** Using WeBWorK **

yes.. that index.html is no longer there and when forcibly putting that file in, would result in a 404 page not found, which is good

the lti debug in localOverrides.conf was just a test... back to usual state

how can I recheck my apache proxy settings

what should $preferred_source_of_username be set to? would that be the key if I chose the wrong one?

My authen_LTI.conf file

#!perl
$debug_lti_parameters = 1;
$debug_lti_grade_passback = 0;
################################################################################################
# Authentication settings
################################################################################################
# This section enables LTI authentication.  If a course uses LTI 1.1 (see $LTIVersion below),
# then the LTIAdvanced module will be used.  If a course uses LTI 1.3 (see $LTIVersion below),
# the LTIAdvantage will be used.  If you know a site will not use one or the other, it can be
# commented out. Failover to Basic_TheLastOption is necessary to authenticate with cookie keys.
$authen{user_module} = [
        { '*' => 'WeBWorK::Authen::LTIAdvantage' },          # first try LTI 1.3
        { '*' => 'WeBWorK::Authen::LTIAdvanced' },           # next try LTI 1.1
        { '*' => 'WeBWorK::Authen::Basic_TheLastOption' }    # fallback authorization method
];
# Include configurations.  You must uncomment at least one of the following. You may uncomment
# both if the site may be using both LTI 1.1 and 1.3 in different courses. After uncommenting
# the LTI_1_x line, you must copy the file authen_LTI_1_x.conf.dist to authen_LTI_1_x.conf and
# then edit that file to fill in the settings for LTI_1_x.
#include('conf/authen_LTI_1_1.conf');
include('conf/authen_LTI_1_1.conf');
$LTIBasicConsumerSecret = "SecretPassword";
# This is the default LTI version that will be used for the site.  This must be 'v1p1' for LTI
# 1.1 authentication, 'v1p3' for LTI 1.3 authentication, or '' to disable LTI authentication.
# A course may override this setting to use the other version of LTI authentication or to
# disable LTI authentication for the course.
$LTIVersion = 'v1p1';
$LTIAccountCreationCutoff = 'ta';
$LMSManageUserData = 1;
$external_auth = 0;
$permissionLevels{change_password} = 'ta';
################################################################################################
# Authorization system LTI:  LMS Grade Passback
################################################################################################
$LTIGradeMode = '';
#$LTIGradeMode = 'course';
#$LTIGradeMode = 'homework';
# When set this variable sends grades back to the LMS every time a user submits an answer.  This
# keeps students grades up to date but can be a drain on the server.
$LTIGradeOnSubmit = 1;
# If CheckPrior is set to 1 then the current LMS grade will be checked first, and if the grade
# has not changed then the grade will not be updated.  This is intended to reduce changes to LMS
# records when no real grade change occurred.  It requires a 2 round process, first querying the
# current grade from the LMS and then when needed making the grade submission.
$LTICheckPrior = 0;
# The system periodically updates student grades on the LMS.  This variable controls how often
# that happens.  Set to -1 to disable.
$LTIMassUpdateInterval = 86400;    #in seconds
################################################################################################
# Add an 'LTI' tab to the Course Configuration page
################################################################################################
@LTIConfigVariables = (
        #'LTI{v1p1}{LMS_name}',
        #'LTI{v1p3}{LMS_name}',
        #'LTI{v1p1}{LMS_url}',
        #'LTI{v1p3}{LMS_url}',
        #'external_auth',
        #'LTIGradeMode',
        #'LMSManageUserData',
        #'debug_lti_parameters'
);
1;    # final line of the file to reassure perl that it was read properly.